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#ifndef SKY_ENGINE_PLATFORM_GRAPHICS_GRAPHICSCONTEXTSTATESAVER_H_
#define SKY_ENGINE_PLATFORM_GRAPHICS_GRAPHICSCONTEXTSTATESAVER_H_

#include "flutter/sky/engine/platform/PlatformExport.h"
#include "flutter/sky/engine/platform/graphics/GraphicsContext.h"

namespace blink {

class PLATFORM_EXPORT GraphicsContextStateSaver {
  WTF_MAKE_FAST_ALLOCATED;

 public:
  GraphicsContextStateSaver(GraphicsContext& context,
                            bool saveAndRestore = true)
      : m_context(context), m_saveAndRestore(saveAndRestore) {
    if (m_saveAndRestore)
      m_context.save();
  }

  ~GraphicsContextStateSaver() {
    if (m_saveAndRestore)
      m_context.restore();
  }

  void save() {
    ASSERT(!m_saveAndRestore);
    m_context.save();
    m_saveAndRestore = true;
  }

  void restore() {
    ASSERT(m_saveAndRestore);
    m_context.restore();
    m_saveAndRestore = false;
  }

  GraphicsContext* context() const { return &m_context; }
  bool saved() const { return m_saveAndRestore; }

 private:
  GraphicsContext& m_context;
  bool m_saveAndRestore;
};

}  // namespace blink

#endif  // SKY_ENGINE_PLATFORM_GRAPHICS_GRAPHICSCONTEXTSTATESAVER_H_
